CVE-2025-32489 Overview
CVE-2025-32489 is a stored cross-site scripting (XSS) vulnerability in the Tim Wetterwarner wetterwarner WordPress plugin. The flaw affects all versions up to and including 2.7.3. The plugin fails to properly neutralize user-supplied input during web page generation, allowing attackers with high privileges to inject persistent JavaScript payloads. Successful exploitation requires user interaction and executes in the context of visitors who load the affected page. The issue is tracked under CWE-79 and documented in the Patchstack Vulnerability Report.
Critical Impact
Stored XSS payloads persist in the WordPress site and execute in the browsers of subsequent visitors, enabling session theft, credential harvesting, and unauthorized actions within the WordPress admin scope.
Affected Products
- Tim Wetterwarner wetterwarner WordPress plugin
- All versions up to and including 2.7.3
- WordPress installations using the vulnerable plugin
Discovery Timeline
- 2025-04-09 - CVE-2025-32489 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in the NVD database
Technical Details for CVE-2025-32489
Vulnerability Analysis
The wetterwarner plugin does not sanitize or encode input rendered into HTML output. An authenticated user with high privileges can submit crafted payloads through plugin-managed fields. The payload is stored in the WordPress database and later served without escaping.
When a browser loads the affected page, the injected script executes within the origin of the WordPress site. The scope change from S:U to S:C indicates the payload can affect resources beyond the vulnerable component, including admin sessions and cross-origin browser contexts governed by the site's cookies.
Root Cause
The root cause is improper neutralization of input during web page generation, classified under CWE-79. The plugin trusts input submitted through privileged interfaces and writes the raw values into rendered HTML. Missing calls to WordPress escaping helpers such as esc_html(), esc_attr(), or wp_kses() leave the output vector open to script injection.
Attack Vector
An attacker requires an authenticated high-privilege account on the target WordPress site. The attacker submits a payload containing HTML or JavaScript through a plugin field that lacks output sanitization. The payload is stored persistently and served to any user who visits the affected page.
Exploitation requires user interaction, typically the victim loading the compromised page in a browser. Once loaded, the script executes with the privileges of the visiting user and can perform actions such as issuing authenticated requests, exfiltrating cookies not marked HttpOnly, or modifying page content. Full technical details are available in the Patchstack Vulnerability Report.
Detection Methods for CVE-2025-32489
Indicators of Compromise
- Unexpected <script>, <iframe>, or event-handler attributes (onerror, onload) stored in wp_options, wp_postmeta, or plugin-specific database tables associated with wetterwarner.
- Outbound HTTP requests from visitor browsers to unfamiliar domains after loading pages that render the plugin.
- New or modified WordPress administrator accounts following visits to affected pages.
Detection Strategies
- Audit database entries related to the wetterwarner plugin for HTML tags, JavaScript keywords, and encoded payloads such as <script>.
- Review web server access logs for POST requests to plugin endpoints containing script-like content in parameter values.
- Deploy Content Security Policy (CSP) violation reporting to surface unexpected inline script execution on affected pages.
Monitoring Recommendations
- Monitor privileged WordPress user activity, including plugin configuration changes and content updates.
- Alert on modifications to plugin option tables outside of expected administrative workflows.
- Track anomalous session activity, including new admin logins from unfamiliar IP addresses or user agents.
How to Mitigate CVE-2025-32489
Immediate Actions Required
- Identify all WordPress sites running the wetterwarner plugin at version 2.7.3 or earlier.
- Deactivate the plugin on affected sites until a patched version is confirmed installed.
- Review database contents for stored payloads and remove any injected script or HTML from plugin-managed fields.
- Rotate credentials for high-privilege WordPress accounts that may have been abused to inject payloads.
Patch Information
At the time of publication, the enriched CVE data does not list a fixed version beyond 2.7.3. Consult the Patchstack Vulnerability Report for the latest remediation status and upgrade guidance directly from the plugin maintainer.
Workarounds
- Restrict high-privilege WordPress roles to trusted administrators and enforce multi-factor authentication.
- Deploy a web application firewall (WAF) rule set that inspects and blocks script tags in POST parameters targeting plugin endpoints.
- Apply a strict Content Security Policy that disallows inline scripts and untrusted script sources.
- Remove the wetterwarner plugin entirely if it is not required for site functionality.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
